DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Pine wood (longitudinal section; Pinus sp), coloured scanning electron micrograph (SEM). Bordered pits in vessel elements and ray cells (centrally located). Pinus species are a conifer, evergreen trees called pine trees. It is the largest genus of conifers and the most widespread genus of trees in the Northern Hemisphere. The natural distribution of pines ranges from arctic and subarctic regions to subtropical and tropical regions. Many pines are fast growing species tolerant of poor soils and relatively arid conditions, making them popular in reforestation. Important pine products include wood, turpentine, and edible seeds. Pine trees are used for their timber and wood pulp throughout the world. In temperate and tropical regions. Magnification: x39 when shortest axis printed at 25 millimetres.
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